The Northern branch of Germanic
languages yielded the Scandinavian languages. In the Middle Ages they were
divided in two very close stocks, West Scandinavian (Norway
and the North Atlantic islands) and East Scandinavian (Sweden
and Denmark).
"Old Norse" is a not very precise term that covers the written forms
of Old Scandinavian, either of all dialects, either of the Western ones,
varying with authors. By far the best attested variety is Old Icelandic;
"Classical" Old Norse is the language of the Icelandic sagas from the
12th and 13th centuries. Tolkien delighted in this
language and its literature. The "outer" names of the Dwarves, by which
they are known to us, and the name of Smaug, are in Old Norse, which represents
the tongue of Dale in the literary device of pseudo-translation adopted in The Lord of the Rings. The
pronunciation we tried to achieve roughly reproduces 13th century
Icelandic.

Faþer vár - the Pater noster in Old
Norse edited by Þorvaldur Bjarnarson

Dvergatal - Reckoning of the Dwarfs,
an extract of the Völuspá, from the Elder Edda, in Old Icelandic

Njörðr and Skaði - Extract from chapter 23 of the Gylfaginning,
from the Prose Edda by Snorri Sturluson, in Old Icelandic